CA: Transmission & Driveline

STAGE 1
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STAGE 2
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STAGE 2 +
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STAGE 3
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STAGE 3 +
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STAGE 4
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STAGE 5
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MULTI DISC
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LIGHTWEIGHT
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The excellent Spec range offers several levels of clutch upgrade for almost all makes and models of vehicle.

-STAGE 1 : For Street, Drag, Drift, Road Race, Rallye, Pulling,and Autocross use.
For bolt on naturally aspirated and mildly modified forced induction engines. Stock-like daily drivability and very good wear characteristics.
High clamp pressure plate, steel-backed and multi-compound woven organic material and high torque sprung hub and disc assembly, bearing and tool kit.

-STAGE 2 : For Street, Drag, Pulling and Autocross use.
For all mild to moderately modified naturally aspirated and power adder engines. (Also good for stock power levels and spririted driving when good daily drivability and extremely long life are the goal.) Stock-like daily drivability and EXCELLENT wear characteristics.
High clamp pressure plate, pure Kevlar friction material and high torque sprung hub and disc assembly, bearing and tool kit.

-STAGE 2+ : Street, Drag, Road Race, Rallye, Pulling, Autocross
For all modified engines making more torque than the stage 2 can support. Maintains stage 2 feel for good daily drivability and offers very good wear characteristics, but provides a higher torque capacity. High clamp pressure plate, composite multi-friction carbon-kevlar material, high torque sprung hub and disc assembly, bearing and tool kit.

-STAGE 3 : Street, Drag, Drift, Road Race, Rallye, Pulling, Autocross
For heavily modified street and race engines. Offers sufficient daily drivability with a comfortable pedal feel and quick engagement. Offers good wear characteristics under low and high stress usage.
High clamp pressure plate, 4 or 6 puck carbon semi-metallic friction with high torque sprung hub and disc assembly, bearing and tool kit. 6 puck is standard on most applications, but 4 puck can be specified when ordering.

-STAGE 3 + : Our favouriteStreet, Drag, Drift, Road Race, Pulling
For heavily modified street and race engines making more torque than the st3 can support. Offers good daily drivability and better manageability than the stage 3, with even better wear characteristics.
High clamp pressure plate, full-faced carbon metallic friction, high torque sprung hub and disc assembly, bearing and tool kit.

- STAGE 4 : Drag, Drift, Road Race, Rallye, Pulling, Circle Track
For heavily modified engines or engines of any modification level being used in the above driving environments, where an instantaneous engagement and light weight are beneficial. Not street-friendly due to harsh engagement.
High clamp pressure plate, 3,4 or 6 puck carbon semi-metallic friction with high torque rigid hub and carrier assembly, bearing and tool kit.

STAGE 5 :Drag, Pulling
For extremely modified drag race and pulling engines, or applications that call for a ‘slipper’ clutch/progressive torque-induced engagement. These clutches are best ordered as custom configured and should be ordered after providing specific information about the car and it’s purpose to a SPEC technical assistant. Not street-friendly due to harsh engagement.
High clamp pressure plate (adjustability available on some applications), rigid iron disc assembly, bearing and tool kit.

- MULTI DISC & LEVER OPTIONS : call for information about SPEC custom adjustable pressure plate and multi-disc systems

-LIGHTWEIGHT OPTIONS : SPEC's Lightweight Option can be added to any clutch for £79.
SPEC manufactures aluminum pressure plates for many applications. These pressure plates are designed for OE fitment, but can be used with an array of transmissions and flywheels. The benefit of the aluminum pressure plate is comparable to gains from a lightweight flywheel, and in most cases is less costly.
For years lightweight flywheels have been used to transfer energy from an engine to the ground more efficiently, resulting in horsepower and torque gains, quicker revving and less internal engine wear. The SPEC aluminum pressure plates offer the same benefits, and the reduction in mass is more effective since the pressure plate extends further from the crank flange.
These plates can be used with an OE flywheel or in conjunction with a lightweight flywheel for a more drastic improvement. Drivability is virtually unchanged, and the aluminum plates offer the same high clamp loads, and in some cases more clamp load, than the standard steel SPEC high performance pressure plates. SPEC uses only aerospace quality aluminum and fasteners and most SPEC aluminum pressure plates carry SFI certification.

Please refer to the on line price list below and it's listed torque capacities for each clutch option and then e mail or call us to make your order.

Please refer to Variations section for Spec flywheels.

WE ALSO OFFER SPEC CLUTCH KITS FOR ALFA ROMEO, AUDI, FORD,HONDA, LAMBORGHINI,LEXUS, MAZDA, MERCEDES,MITSUBISHI, NISSAN,PORSCHE, SAAB,SUBARU, TOYOTA, VOLVO AND VOLKSWAGEN.

NOTE: Due to potential very hard road use and possible track use, these performance clutches are sold as race parts, and as such do not have carry any warranty or guarantee. However should any suspected damage or defects arise we will always consider goodwill reparations, which are entirely at the discretion of our engineers and SPEC USA.

SPEC CLUTCH APPLICATION & PRICE LIST